I want to do a knob for salt and pepper noise but the value of the noise dose not change
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
rama
am 14 Jan. 2023
Beantwortet: Image Analyst
am 14 Jan. 2023
changingValue = event.Value;
input=im2gray(a); %a is my image
imshow(input,'Parent',app.UIAxes_2);
app.SaltpepperButton_2.Value=true;
J=input;
J =imnoise(J,'salt & pepper');
imshow(J,'Parent',app.UIAxes_2);
end
2 Kommentare
Akzeptierte Antwort
Chris
am 14 Jan. 2023
Bearbeitet: Chris
am 14 Jan. 2023
function UIAxesButtonDown(app, event)
% The default button style doesn't have a value.
% changingValue = event.Value;
% You can't grab "a" from nowhere. If you didn't generate it in
% this callback, or if you want to store it for later use,
% it should be a property of the app.
input=im2gray(app.a);
imshow(input,'Parent',app.UIAxes_2);
% app.SaltpepperButton_2.Value=true;
J=input;
J =imnoise(J,'salt & pepper');
% You just used these axes. Depending on your computer, or how
% Matlab optimizes the function,
% the change will be too fast to see/skipped over.
pause(.5)
imshow(J,'Parent',app.UIAxes_2);
end
0 Kommentare
Weitere Antworten (1)
Image Analyst
am 14 Jan. 2023
You need to call imnoise with the parameter that controls the amount of noise added to the image. You get this value by getting the value of a slider or knob, or edit field, or however the user is going to indicate the level of noise to be added to the image. For example, if the noise density is controlled by a slider, in the slider callback
% Get noise level from the control on the GUI.
noiseDensity = app.sldNoiseDensity.Value;
% Apply this density to the noise-free image:
noisyImage = imnoise(originalImage, 'salt & pepper', noiseDensity);
0 Kommentare
Siehe auch
Kategorien
Mehr zu Image Processing Toolbox finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!